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1 | /******************************************************************************* |
2 | ||
3 | Intel(R) 82576 Virtual Function Linux driver | |
4 | Copyright(c) 2009 Intel Corporation. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify it | |
7 | under the terms and conditions of the GNU General Public License, | |
8 | version 2, as published by the Free Software Foundation. | |
9 | ||
10 | This program is distributed in the hope it will be useful, but WITHOUT | |
11 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
13 | more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License along with | |
16 | this program; if not, write to the Free Software Foundation, Inc., | |
17 | 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | ||
19 | The full GNU General Public License is included in this distribution in | |
20 | the file called "COPYING". | |
21 | ||
22 | Contact Information: | |
23 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> | |
24 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
25 | ||
26 | *******************************************************************************/ | |
27 | ||
28 | /* Linux PRO/1000 Ethernet Driver main header file */ | |
29 | ||
30 | #ifndef _IGBVF_H_ | |
31 | #define _IGBVF_H_ | |
32 | ||
33 | #include <linux/types.h> | |
34 | #include <linux/timer.h> | |
35 | #include <linux/io.h> | |
36 | #include <linux/netdevice.h> | |
37 | ||
38 | ||
39 | #include "vf.h" | |
40 | ||
41 | /* Forward declarations */ | |
42 | struct igbvf_info; | |
43 | struct igbvf_adapter; | |
44 | ||
45 | /* Interrupt defines */ | |
46 | #define IGBVF_START_ITR 648 /* ~6000 ints/sec */ | |
47 | ||
98a1708d | 48 | /* Interrupt modes, as used by the IntMode parameter */ |
d4e0fe01 AD |
49 | #define IGBVF_INT_MODE_LEGACY 0 |
50 | #define IGBVF_INT_MODE_MSI 1 | |
51 | #define IGBVF_INT_MODE_MSIX 2 | |
52 | ||
53 | /* Tx/Rx descriptor defines */ | |
54 | #define IGBVF_DEFAULT_TXD 256 | |
55 | #define IGBVF_MAX_TXD 4096 | |
56 | #define IGBVF_MIN_TXD 80 | |
57 | ||
58 | #define IGBVF_DEFAULT_RXD 256 | |
59 | #define IGBVF_MAX_RXD 4096 | |
60 | #define IGBVF_MIN_RXD 80 | |
61 | ||
62 | #define IGBVF_MIN_ITR_USECS 10 /* 100000 irq/sec */ | |
63 | #define IGBVF_MAX_ITR_USECS 10000 /* 100 irq/sec */ | |
64 | ||
65 | /* RX descriptor control thresholds. | |
66 | * PTHRESH - MAC will consider prefetch if it has fewer than this number of | |
67 | * descriptors available in its onboard memory. | |
68 | * Setting this to 0 disables RX descriptor prefetch. | |
69 | * HTHRESH - MAC will only prefetch if there are at least this many descriptors | |
70 | * available in host memory. | |
71 | * If PTHRESH is 0, this should also be 0. | |
72 | * WTHRESH - RX descriptor writeback threshold - MAC will delay writing back | |
73 | * descriptors until either it has this many to write back, or the | |
74 | * ITR timer expires. | |
75 | */ | |
76 | #define IGBVF_RX_PTHRESH 16 | |
77 | #define IGBVF_RX_HTHRESH 8 | |
78 | #define IGBVF_RX_WTHRESH 1 | |
79 | ||
80 | /* this is the size past which hardware will drop packets when setting LPE=0 */ | |
81 | #define MAXIMUM_ETHERNET_VLAN_SIZE 1522 | |
82 | ||
83 | #define IGBVF_FC_PAUSE_TIME 0x0680 /* 858 usec */ | |
84 | ||
85 | /* How many Tx Descriptors do we need to call netif_wake_queue ? */ | |
86 | #define IGBVF_TX_QUEUE_WAKE 32 | |
87 | /* How many Rx Buffers do we bundle into one write to the hardware ? */ | |
88 | #define IGBVF_RX_BUFFER_WRITE 16 /* Must be power of 2 */ | |
89 | ||
90 | #define AUTO_ALL_MODES 0 | |
91 | #define IGBVF_EEPROM_APME 0x0400 | |
92 | ||
93 | #define IGBVF_MNG_VLAN_NONE (-1) | |
94 | ||
95 | /* Number of packet split data buffers (not including the header buffer) */ | |
96 | #define PS_PAGE_BUFFERS (MAX_PS_BUFFERS - 1) | |
97 | ||
98 | enum igbvf_boards { | |
99 | board_vf, | |
100 | }; | |
101 | ||
102 | struct igbvf_queue_stats { | |
103 | u64 packets; | |
104 | u64 bytes; | |
105 | }; | |
106 | ||
107 | /* | |
108 | * wrappers around a pointer to a socket buffer, | |
109 | * so a DMA handle can be stored along with the buffer | |
110 | */ | |
111 | struct igbvf_buffer { | |
112 | dma_addr_t dma; | |
113 | struct sk_buff *skb; | |
114 | union { | |
115 | /* Tx */ | |
116 | struct { | |
117 | unsigned long time_stamp; | |
118 | u16 length; | |
119 | u16 next_to_watch; | |
a7d5ca40 | 120 | u16 mapped_as_page; |
d4e0fe01 AD |
121 | }; |
122 | /* Rx */ | |
123 | struct { | |
124 | struct page *page; | |
125 | u64 page_dma; | |
126 | unsigned int page_offset; | |
127 | }; | |
128 | }; | |
129 | struct page *page; | |
130 | }; | |
131 | ||
132 | union igbvf_desc { | |
133 | union e1000_adv_rx_desc rx_desc; | |
134 | union e1000_adv_tx_desc tx_desc; | |
135 | struct e1000_adv_tx_context_desc tx_context_desc; | |
136 | }; | |
137 | ||
138 | struct igbvf_ring { | |
139 | struct igbvf_adapter *adapter; /* backlink */ | |
140 | union igbvf_desc *desc; /* pointer to ring memory */ | |
141 | dma_addr_t dma; /* phys address of ring */ | |
142 | unsigned int size; /* length of ring in bytes */ | |
143 | unsigned int count; /* number of desc. in ring */ | |
144 | ||
145 | u16 next_to_use; | |
146 | u16 next_to_clean; | |
147 | ||
148 | u16 head; | |
149 | u16 tail; | |
150 | ||
151 | /* array of buffer information structs */ | |
152 | struct igbvf_buffer *buffer_info; | |
153 | struct napi_struct napi; | |
154 | ||
155 | char name[IFNAMSIZ + 5]; | |
156 | u32 eims_value; | |
157 | u32 itr_val; | |
158 | u16 itr_register; | |
159 | int set_itr; | |
160 | ||
161 | struct sk_buff *rx_skb_top; | |
162 | ||
163 | struct igbvf_queue_stats stats; | |
164 | }; | |
165 | ||
166 | /* board specific private data structure */ | |
167 | struct igbvf_adapter { | |
168 | struct timer_list watchdog_timer; | |
169 | struct timer_list blink_timer; | |
170 | ||
171 | struct work_struct reset_task; | |
172 | struct work_struct watchdog_task; | |
173 | ||
174 | const struct igbvf_info *ei; | |
175 | ||
176 | struct vlan_group *vlgrp; | |
177 | u32 bd_number; | |
178 | u32 rx_buffer_len; | |
179 | u32 polling_interval; | |
180 | u16 mng_vlan_id; | |
181 | u16 link_speed; | |
182 | u16 link_duplex; | |
183 | ||
184 | spinlock_t tx_queue_lock; /* prevent concurrent tail updates */ | |
185 | ||
186 | /* track device up/down/testing state */ | |
187 | unsigned long state; | |
188 | ||
189 | /* Interrupt Throttle Rate */ | |
190 | u32 itr; | |
191 | u32 itr_setting; | |
192 | u16 tx_itr; | |
193 | u16 rx_itr; | |
194 | ||
195 | /* | |
196 | * Tx | |
197 | */ | |
198 | struct igbvf_ring *tx_ring /* One per active queue */ | |
199 | ____cacheline_aligned_in_smp; | |
200 | ||
201 | unsigned long tx_queue_len; | |
202 | unsigned int restart_queue; | |
203 | u32 txd_cmd; | |
204 | ||
205 | bool detect_tx_hung; | |
206 | u8 tx_timeout_factor; | |
207 | ||
208 | u32 tx_int_delay; | |
209 | u32 tx_abs_int_delay; | |
210 | ||
211 | unsigned int total_tx_bytes; | |
212 | unsigned int total_tx_packets; | |
213 | unsigned int total_rx_bytes; | |
214 | unsigned int total_rx_packets; | |
215 | ||
216 | /* Tx stats */ | |
217 | u32 tx_timeout_count; | |
218 | u32 tx_fifo_head; | |
219 | u32 tx_head_addr; | |
220 | u32 tx_fifo_size; | |
221 | u32 tx_dma_failed; | |
222 | ||
223 | /* | |
224 | * Rx | |
225 | */ | |
226 | struct igbvf_ring *rx_ring; | |
227 | ||
228 | u32 rx_int_delay; | |
229 | u32 rx_abs_int_delay; | |
230 | ||
231 | /* Rx stats */ | |
232 | u64 hw_csum_err; | |
233 | u64 hw_csum_good; | |
234 | u64 rx_hdr_split; | |
235 | u32 alloc_rx_buff_failed; | |
236 | u32 rx_dma_failed; | |
237 | ||
238 | unsigned int rx_ps_hdr_size; | |
239 | u32 max_frame_size; | |
240 | u32 min_frame_size; | |
241 | ||
242 | /* OS defined structs */ | |
243 | struct net_device *netdev; | |
244 | struct pci_dev *pdev; | |
245 | struct net_device_stats net_stats; | |
246 | spinlock_t stats_lock; /* prevent concurrent stats updates */ | |
247 | ||
248 | /* structs defined in e1000_hw.h */ | |
249 | struct e1000_hw hw; | |
250 | ||
251 | /* The VF counters don't clear on read so we have to get a base | |
252 | * count on driver start up and always subtract that base on | |
253 | * on the first update, thus the flag.. | |
254 | */ | |
255 | struct e1000_vf_stats stats; | |
256 | u64 zero_base; | |
257 | ||
258 | struct igbvf_ring test_tx_ring; | |
259 | struct igbvf_ring test_rx_ring; | |
260 | u32 test_icr; | |
261 | ||
262 | u32 msg_enable; | |
263 | struct msix_entry *msix_entries; | |
264 | int int_mode; | |
265 | u32 eims_enable_mask; | |
266 | u32 eims_other; | |
267 | u32 int_counter0; | |
268 | u32 int_counter1; | |
269 | ||
270 | u32 eeprom_wol; | |
271 | u32 wol; | |
272 | u32 pba; | |
273 | ||
274 | bool fc_autoneg; | |
275 | ||
276 | unsigned long led_status; | |
277 | ||
278 | unsigned int flags; | |
72279093 | 279 | unsigned long last_reset; |
d4e0fe01 AD |
280 | }; |
281 | ||
282 | struct igbvf_info { | |
283 | enum e1000_mac_type mac; | |
284 | unsigned int flags; | |
285 | u32 pba; | |
286 | void (*init_ops)(struct e1000_hw *); | |
287 | s32 (*get_variants)(struct igbvf_adapter *); | |
288 | }; | |
289 | ||
290 | /* hardware capability, feature, and workaround flags */ | |
0364d6fd | 291 | #define IGBVF_FLAG_RX_CSUM_DISABLED (1 << 0) |
d4e0fe01 AD |
292 | |
293 | #define IGBVF_RX_DESC_ADV(R, i) \ | |
294 | (&((((R).desc))[i].rx_desc)) | |
295 | #define IGBVF_TX_DESC_ADV(R, i) \ | |
296 | (&((((R).desc))[i].tx_desc)) | |
297 | #define IGBVF_TX_CTXTDESC_ADV(R, i) \ | |
298 | (&((((R).desc))[i].tx_context_desc)) | |
299 | ||
300 | enum igbvf_state_t { | |
301 | __IGBVF_TESTING, | |
302 | __IGBVF_RESETTING, | |
303 | __IGBVF_DOWN | |
304 | }; | |
305 | ||
306 | enum latency_range { | |
307 | lowest_latency = 0, | |
308 | low_latency = 1, | |
309 | bulk_latency = 2, | |
310 | latency_invalid = 255 | |
311 | }; | |
312 | ||
313 | extern char igbvf_driver_name[]; | |
314 | extern const char igbvf_driver_version[]; | |
315 | ||
316 | extern void igbvf_check_options(struct igbvf_adapter *); | |
317 | extern void igbvf_set_ethtool_ops(struct net_device *); | |
318 | ||
319 | extern int igbvf_up(struct igbvf_adapter *); | |
320 | extern void igbvf_down(struct igbvf_adapter *); | |
321 | extern void igbvf_reinit_locked(struct igbvf_adapter *); | |
d4e0fe01 AD |
322 | extern int igbvf_setup_rx_resources(struct igbvf_adapter *, struct igbvf_ring *); |
323 | extern int igbvf_setup_tx_resources(struct igbvf_adapter *, struct igbvf_ring *); | |
324 | extern void igbvf_free_rx_resources(struct igbvf_ring *); | |
325 | extern void igbvf_free_tx_resources(struct igbvf_ring *); | |
326 | extern void igbvf_update_stats(struct igbvf_adapter *); | |
d4e0fe01 AD |
327 | |
328 | extern unsigned int copybreak; | |
329 | ||
330 | #endif /* _IGBVF_H_ */ |